OPTICAL RECORDING DEVICE, OPTICAL RECORDING METHOD AND MULTI-LAYER DISK

摘要

An optical recording device that records to a multi-layer disk having multiple recording layers includes a controller which sets a data area in which user data is recorded, and a calibration area including a main calibration area and at least one sub-calibration area which are used to calibrate the intensity of laser light for recording, with the same layout among the plurality of recording layers, conducts first calibration for performing initial recording in the data area by using the main calibration area, records dummy data in the remainder of the main calibration area, and conducts second calibration for performing additional recording in the data area by using the sub-calibration area.

主权项

1. An optical recording device that records to a multi-layer disk having multiple recording layers, said optical recording device comprising:
an optical pickup that selectively irradiates laser light to the recording layers via an objective lens; and a control part that performs controls in such a way as to: set in each of the multiple recording layers a data area where user data is recorded and a calibration area used for an intensity calibration process of the laser light for recording, including a main calibration area and at least one sub calibration area, according to a same layout that applies to all of the multiple recording layers; use the main calibration area to perform a first calibration process for implementing initial recording to the data area in each of the multiple recording layers one by one from a recording layer farthest away from or closest to an objective lens of an optical pickup; record dummy data to a remainder of the main calibration area; and use the at least one sub calibration area to perform a second calibration process for additional recording to the data area.